/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */
package org.apache.iotdb;

import org.apache.iotdb.jdbc.IoTDBSQLException;

import java.sql.*;

public class JDBCExample {

    public static void main(String[] args) throws ClassNotFoundException, SQLException {
        Class.forName("org.apache.iotdb.jdbc.IoTDBDriver");
        try (Connection connection =
                     DriverManager.getConnection(
                             "jdbc:iotdb://127.0.0.1:6667?version=V_0_13", "root", "root");
             Statement statement = connection.createStatement()) {

            // set JDBC fetchSize
            statement.setFetchSize(10000);

            try {
                statement.execute("CREATE DATABASE root.sg1");
                statement.execute(
                        "CREATE TIMESERIES root.sg1.d1.s1 WITH DATATYPE=INT64, ENCODING=RLE, COMPRESSOR=SNAPPY");
                statement.execute(
                        "CREATE TIMESERIES root.sg1.d1.s2 WITH DATATYPE=INT64, ENCODING=RLE, COMPRESSOR=SNAPPY");
                statement.execute(
                        "CREATE TIMESERIES root.sg1.d1.s3 WITH DATATYPE=INT64, ENCODING=RLE, COMPRESSOR=SNAPPY");
            } catch (IoTDBSQLException e) {
                System.out.println(e.getMessage());
            }

            for (int i = 0; i <= 100; i++) {
                statement.addBatch(prepareInsertStatment(i));
            }
            statement.executeBatch();
            statement.clearBatch();

            ResultSet resultSet = statement.executeQuery("select ** from root where time <= 10");
            outputResult(resultSet);
            resultSet = statement.executeQuery("select count(**) from root");
            outputResult(resultSet);
            resultSet =
                    statement.executeQuery(
                            "select count(**) from root where time >= 1 and time <= 100 group by ([0, 100), 20ms, 20ms)");
            outputResult(resultSet);
        } catch (IoTDBSQLException e) {
            System.out.println(e.getMessage());
        }
    }

    private static void outputResult(ResultSet resultSet) throws SQLException {
        if (resultSet != null) {
            System.out.println("--------------------------");
            final ResultSetMetaData metaData = resultSet.getMetaData();
            final int columnCount = metaData.getColumnCount();
            for (int i = 0; i < columnCount; i++) {
                System.out.print(metaData.getColumnLabel(i + 1) + " ");
            }
            System.out.println();
            while (resultSet.next()) {
                for (int i = 1; ; i++) {
                    System.out.print(resultSet.getString(i));
                    if (i < columnCount) {
                        System.out.print(", ");
                    } else {
                        System.out.println();
                        break;
                    }
                }
            }
            System.out.println("--------------------------\n");
        }
    }

    private static String prepareInsertStatment(int time) {
        return "insert into root.sg1.d1(timestamp, s1, s2, s3) values("
                + time
                + ","
                + 1
                + ","
                + 1
                + ","
                + 1
                + ")";
    }
}
